Abstract: A cooled screw vacuum pump has a housing (4) two rotating systems (5, 6) consisting each of a screw rotor (5) and a shaft (6), a floating device supporting the rotors having, on each shaft, two mutually spaced bearings (7, 8) and an empty space (31) arranged in each rotor (5) open on the bearing side, wherein is respectively located an element cooling the rotor internally. In order to improve cooling it is suggested that the bearing (7) of the support located on the rotor side, is placed outside the rotor (5) empty space (31), such that in said empty space (31) there is more room available for obtaining efficient cooling.

Abstract: The present invention pertains to rotary internal combustion engines and essentially relates to an engine including a body that comprises an inner cylindrical cavity as well as side covers. The cavity comprises a rotor-piston which is concentrically mounted therein, which comprises side surfaces, radial protrusions and radial recesses on its peripheral surface, and which forms together with the body a plurality of segmented cavities. The side surfaces of the rotor-piston abut tightly with the side covers, while the radial protrusions at the peripheral surface of the rotor-piston abut tightly with the inner cylindrical surface of the body cavity. The combustion chamber is located beyond the limits of the inner cylindrical cavity and communicates with the latter through inlet and outlet channels provided with controlled slide valves.

Abstract: A dry-compressing screw pump in the form of a two-shaft positive displacement pump. A first and a second rotor spindle are disposed parallel to each other. The rotor spindles are hollow. A cooling medium is fed at a first front face of the rotor spindles and evacuated at a second front face of the rotor spindles. A cooling medium feeding and evacuation means is connected to an external cooling medium circuit. The inner diameter of the rotor spindles monotonously increases from the first front face toward the second front face so that the cooling medium is conveyed from the first front face to the second front face substantially under the influence of centrifugal force acting on the cooling medium due to the rotation of the rotor spindle.

Abstract: A thermal design and method of operation of a rotary internal combustion engine having at least one housing, a rotor rotating within the housing, and a mechanism for combusting mixture of fuel air and steam supplied into the housing to drive the rotor, in which the temperature of the inner walls of the combustion region which are in contact with combusting gases attains 700° C., and in which the temperature of the combusting gases does not exceeds 1800° C. The thermal design includes: lining of the surface of the combustion zone with heat resistive materials such as a refractory metal; the use of material with low heat conductivity such as iron for the construction of the body of the engine in order to minimize heat loses by heat transfer to ambient; and the effective cooling of the body of the engine with boiling heat transfer by water which is circulated in cooling channels passing throughout the engines structure.

Abstract: A scroll-type compressor having a stationary scroll and a movable scroll is provided. A compression chamber is defined between a stationary scroll and a movable scroll. A refrigerant introducing passage formed in the movable scroll for introducing a refrigerant from the compression chamber to a driving mechanism. The compressed refrigerant including a lubricant introduced through the passage is affective to lubricate the driving mechanism. The compressor may also include a sump to collect the lubricant leaving the driving mechanism. Collected lubricant is reintroduced into the compression region via a suction region of the compressor.

Abstract: To prevent a decrease in capacity of a compressor, and to decrease the quantity of oil contained in discharged gas, and to decrease the quantity of oil discharged to an outside of the compressor. In a screw compressor in which a screw rotor is supported by a low-pressure side bearing and a high-pressure side bearing in a rotor casing and the screw rotor and a driving motor are connected to each other by a coupling, and a drain oil passage is provided to return oil having lubricated the high-pressure side bearing to a low-pressure gas suction side through a through hole formed in a center of the screw rotor, a throttle mechanism is provided in the drain oil passage to inject the oil.

Abstract: The invention relates to a pneumatic motor, in which a rotor (16) driven by compressed air rotates in a cylindrical motor sleeve (14). As a replacement for lubrication with compressed operating air containing oil, as, has hitherto been the conventional practice, cavities (28) for accommodating a lubricant ( ) and connecting paths for the transport of the lubricant (30) from the cavities (28) into the motor sleeve (14) are provided in the rotor (16).

Abstract: A rotary screw type pump is provided with internal cavities within the rotors. The rotors include shaft portions that extend out from the casing that contains the screw portion of the rotors. The cavities extend from the screw portion of the rotors at the compression side of the casing to the shaft portion of the rotors. The cavities are charged with a fluid and may include a porous wick in order to act similar to a heat pipe for removing the heat generated during pump compression. The heat is transferred to the shaft portion of the rotors. The shaft portion of the rotors extend into a cavity that contains a coolant. A water jacket surrounds the cavity. The heat is transferred from the shaft portion of the rotors to the coolant and then the water jacket for removal. The heat transfer from the shaft portions to the coolant may be facilitated with the use of fins.

Abstract: It is an improvement of a package-type compressor that is used for the air compression, refrigerating and air conditioning The compressor is a double scroll compressor that a laps are formed on both sides of an end plate of orbiting scroll. A scroll compressor element is disposed above a motor and a dryer is disposed further above the scroll compressor element. A cooling fan is installed in the motor. A cooler that cools operation gas through the compressor element is disposed above the cooling fan. A partition plate defines a first flow passage for cooling the motor and the compressor element and a second flow passage for cooling the cooler. A first suction port sucking external air to the first and second flow passages is provided on a casing side wall locating in a direction extending from the motor shaft. A suction partitioning plate is attached to a casing sidewall opposite to the casing side wall having the first suction port. The second suction port is lower than the first suction port.

Abstract: In a displacement type fluid machine wherein a space is formed by the inner wall surface of a cylinder and the outer wall surface of a displacer when the center of the cylinder is located on the center of the displacer, and a plurality of working chambers is formed when the positional relationship between the displacer and cylinder is for a gyration, the wear is reduced between the cylinder and displacer. Sliding portions between the displacer 5 and a cylinder 4 are fed with a lubricating oil 12 by forming an oil-feeding groove 5c in the surface of the displacer 5 so as to extend from the central portion of the displacer 5 to the vicinity of a suction port 7a, and feeding the lubricating oil 12 from the central portion of the displacer 5, so that the wear can be reduced.

Abstract: An orbiting fluid machine has a feature that the speed of sliding movement is low, while vibrations are small, its performance is lowered when the rotational speed becomes high, and this problem is resolved by the following structure. A displacement fluid machine includes a displacer making an orbital motion within a casing into which a working fluid is drawn, thereby drawing and discharging the working fluid, in which an oil retaining mechanism or a seal mechanism is provided at each of opposite end surfaces of the displacer. This results that, axial gaps at the end surfaces of the displacer are effectively sealed so as to reduce a leakage loss, thereby achieving a high performance and a high reliability.

Abstract: A scroll fluid machine having a lubrication pump provided between sliding contact surfaces of an orbiting scroll member and a thrust bearing in a casing. The pump has an orbiting member accommodating recess provided in the sliding contact surface of the thrust bearing. An orbiting member projects from the sliding contact surface of the orbiting scroll member into the recess. A slide plate defines a suction chamber and a discharge chamber in the recess. As the orbiting scroll member orbits, the orbiting member orbits in the recess, causing a lubricant contained in the casing to be sucked from a suction passage and delivered to the inside of a boss portion accommodating an orbiting bearing.

Abstract: An internal combustion rotary engine includes a stationary, centrally located manifold having an intake and an exhaust port. Inner and outer rotor assemblies are provided which rotate in a common direction about the centrally located manifold. Each of the inner and outer rotor assemblies includes two pairs of diametrically opposed pistons, generally of octagonal shape which divide a rotating internal volume, defined by the outer rotor assembly, into four working chambers. Pistons of the inner rotor assembly slide along related walls of the outer rotor assembly and by this arrangement, the four working chambers communicate periodically with the intake and exhaust ports. Angular movement of the inner rotor assembly against the outer rotor assembly ensures that each working chamber is at minimum volume and at a maximum volume four times per revolution of a crankshaft of the engine.

Abstract: A rotary compressor has a cylinder, a crank shaft having an eccentric part disposed in said cylinder, a bearing which rotatably supports said crank shaft, a roller which moves in said cylinder following said eccentric part, and a vane whose all or part of the tip is of circular configuration, wherein a groove with which the vane tip is disposed in contact is provided on the outer periphery of said roller, a first oil groove is provided on the end face of said roller, and said roller is provided with an oil hole communicating said first oil groove and said groove of the roller.

Abstract: A double scroll compressor including an orbiting scroll having spiral wraps formed on both sides of an end plate includes two stationary scrolls, each having a wrap formed thereon to mesh with the corresponding one of the spirals to form a compressing flow passage. The power of a driver, such as a motor, is transmitted via pulleys to two crank shafts which are disposed to extend through the end plate of the orbiting scroll approximately symmetrically with respect to the end plate. The two crank shafts are synchronously rotationally driven by a timing belt disposed between the pulleys. While the crank shafts are making their rotary motions, the orbiting scroll makes its eccentric circular motion and a sucked gas is compressed between the orbiting scroll and the stationary scrolls. A multiplicity of cooling flow passages approximately perpendicular to a line which connects the axes of the crank shafts are formed to extend through the central portion of the end plate of the orbiting scroll.

Abstract: A rotary vane motor adapted to operate at low rpm with a source of cryogenic pressurized gas. The rotary vane motor includes a housing having a cylindrical opening connected to a primary inlet assembly and an outlet assembly, a first and second end plate attached at opposite sides of the cylindrical opening, a rotor having a plurality of radially oriented, a plurality of vanes movable within the slots and a shaft for rotatably mounting the rotor in an eccentric position within the cylindrical opening. The first end plate includes a slot positioned for fluid communication with at least one of the rotor slots so as to direct pressurized fluid from a secondary inlet assembly. In the preferred embodiment, each of the plurality of vanes includes grooves for facilitating release of trapped fluid. During use, pressurized gas from the secondary inlet assembly forces the vanes radially outward relative to the rotor slots upon communication with first end plate slot such that any friction-causing problems are overcome.

Abstract: A rotor and stator cooling system for a rotary vane pumping machine having two end plates, a stator assembly, and a rotor. A rotor cooling gas supplied at a cooling gas supply channel in an end plate passes from a radial inner location, along a rotor face chamber of the rotor in an outward radial direction, and then toward a plurality of rotor gas channels in the rotor. The rotor cooling gas absorbs heat from the rotor and then exits through a heated gas exit channel in another endplate. A stator cooling fluid entering at a cooling fluid port in one end plate passes through stator fluid channels of the stator assembly, absorbs heat therein, and exits at another fluid port in the other endplate.

Abstract: A rotary compression equipment includes: a housing having at least two intermeshing hollow rotors rotatably mounted in the housing by two shafts, each rotor formed with a hollow portion for passing a coolant in the hollow portion for cooling the meshing rotors when rotated, and a coolant passage formed in each shaft and fluidically communicated with the hollow portion in the rotor for leading coolant from the coolant passage into the hollow portion in the rotor for removing heat of the rotors outwardly for reducing thermal expansion of the rotary equipment and increasing the efficiency of the rotary equipment.

Abstract: The invention provides a two-rotors screw compressor having active cooling means on the pressure side of the motive rotor.

Abstract: A scroll-type refrigerant fluid compressor includes a fixed scroll having a first circular end plate from which a first spiral wrap extends, and an orbiting scroll having a second circular end plate from which a second spiral wrap extends. The spiral wraps interfit each other at an angular and radial offset to form line contacts defining a pair of sealed-off fluid pockets. An anti-wear plate is disposed on one end surface of the second circular end plate of the orbiting scroll that engages with the second spiral element of the orbiting scroll. An annular boss is formed at a central portion of the other end surface of the second circular end plate of the orbiting scroll. An inner end of a drive shaft is operatively connected to the orbiting scroll through a bushing which is rotatably disposed within the boss. An axial hole is centrally formed through the second circular end plate of the orbiting scroll.

Abstract: A rotary screw compressor that includes a male rotor and a female rotor cooperating together within a casing. The casing has a discharge outlet connected to an outlet port at a high pressure end of the working space and a suction inlet at the low pressure end of a working space. The rotor is rotatably supported at one end thereof through a bearing arrangement that includes a bracket fixed to an end cover. The bearing bracket projects into an axial cavity provided in the rotor to form a first chamber between the bracket and the rotor. The bracket is provided with an oil feed channel to feed oil into the first chamber. The rotor is rotatably supported at the low pressure end thereof through the bearing arrangement. The corresponding bearing bracket is mounted at the low pressure end of the working space and the outer circumferential surface thereof is provided with at least a groove connected to the oil feed channel and a recess connected to an oil drainage channel provided in the bearing bracket.

Abstract: A guided-vane type rotary apparatus including a housing, a rotor rotatably mounted within the housing for rotation about an axis, and vanes associated with the rotor for movement radially with respect thereto between alternative radial positions utilizes an endless groove defined in the housing and cam follower elements which are joined to the vanes and captured between the walls of the groove. As the rotor is rotated about its axis and the vanes are forced to rotate within the housing in conjunction with the rotor, the cam follower elements are guided along the groove and force the vanes to move radially of the rotor between alternative radial positions. Thus, the walls of the groove and each mechanism joined to a vane cooperate as cam and cam follower, respectively, to move the corresponding vane between alternative radial positions as the rotor is rotated within the housing.

Abstract: An improved rotary, gear within a gear transfer pump, including a pump housing having a circular pumping chamber communicating with a first port and a second port. An externally driven rotor is in meshing relationship with an internal idler gear. To enable the pump to handle an abrasive fluid medium or a non-homogenous pump fluid, an idler gear seal and a shaft seal are employed to contain pumped fluid within the pump chamber. A source of lubricating/flushing fluid is communicated to an idler gear bearing region and a shaft bearing. An idler gear seal includes a "flow resisting" side exposed to pump chamber fluid and a "flow passing" side exposed to lubricating/flushing fluid. The shaft seal includes a "flow resisting" side exposed to pump chamber pressure and a "flow-passing" side exposed to lubricating fluid. A cross-communicating fluid circuit maintains the "flow resisting " sides of both seals at substantially the same pressure.

Abstract: A displacement machine for compressible mediums exhibits several spiral-shaped convoying spaces (11a, 11b), which are disposed in a stationary housing (7a, 7b). A displacement body (1-4) is assigned to the conveying spaces and is held in such a manner on a disk-shaped rotor (1) that can be driven eccentrically relative to the housing that during service each of its points effects a circular movement defined by the circumferential walls of the conveying spaces. To this end an eccentric disk (23), on which the rotor (1) is mounted by means of an oil-lubricated mounting, is disposed on the drive shaft (24). A sliding bearing (22) is provided on the rotating eccentric disk (23) for the orbiting rotor (1). The oil is fed in and drawn off by way of a borehole (31) in the eccentric disk. Passages are disposed within the eccentric disk to feed oil without air into the sliding bearing gap.

Abstract: A compressor includes a casing having an oil reservoir, a cylinder situated within the casing, a cylindrical rotary body situated eccentrically within the cylinder, the rotary body having first and second spiral grooves extending in opposite directions from the middle part of the rotary body to both ends of the rotary body, first and second spiral blades fitted in the first and second spiral grooves, the blades having outer peripheral surfaces brought into contact with the inner peripheral surface of the cylinder, dividing the space defined by the inner peripheral surface of the cylinder and the rotary body into a plurality of working chambers, thereby constituting first and second compression sections, wherein the first and second blades freely project from and retreat in the first and second spiral grooves in the radial direction of the rotary body, driving means for rotating the cylinder and the rotary body relative to each other, a first refrigerant passage formed in the rotary body and opening to an area

Abstract: A rotary piston internal combustion engine of trochoidal type of construction with a piston slidably journalled and controlled via a synchronous transmission gear drive unit. An eccentric bearing of the piston is sealed-off on both sides of the remaining machine chambers or spaces with sealing rings located around the eccentric shaft. Circulation of the lubricating oil and cooling oil that is under pressure being delimited as to this bearing and the cooling hollow chambers of the piston with such lubricating oil and cooling oil being kept away from the working chambers and also eliminating any oil inner seals otherwise required therewith.

Abstract: A compressor having a cylinder and a cylindrical rotational body housed within the cylinder. A spiral groove is formed in the outer peripheral surface of the rotational body, and a spiral blade is fitted in the groove so as to be freely retreated in and projected from the groove in the radial direction of the rotational body. The cylinder and the rotational body are rotated relative to each other by a drive mechanism. A fluid to be compressed is introduced into working chambers defined by the blade, the inner peripheral surface of the cylinder and the outer peripheral surface of the rotational body. The fluid is first guided into the first working chamber from a gas suction port, and then into the second and subsequent working chambers successively, whereby the fluid is compressed. An oil supply mechanism supplies pressurized oil to an oil supply hole formed in the rotational body.

Abstract: A triangle rotation engine, which comprises an oval rotor repeatedly performing Auto cycle inside a cylinder block, which defines therein three cylinder walls, for driving a crank shaft slidably linked with the oval rotor for an output of power through two axles and two fanshaped wheels pivotally connected with the crank shaft so as to achieve the performance of an internal combustion engine.

Abstract: A low pressure container type rolling piston compressor which includes a compression element, a motor element, a rotary shaft with an eccentric portion driven by the motor element, a cylinder for receiving therein the eccentric portion of the rotary shaft, a rolling piston having an inner circumference to which the eccentric portion is fitted and an outer circumference which rolls along the inner wall surface of the cylinder, a vane having an end which is in contact with the outer circumference of the rolling piston to divide the inner space of the cylinder into a high pressure chamber and a low pressure chamber, a pair of bearing plates for closing both open ends of the cylinder, a sealing container housing the above-mentioned structural elements and storing at its lower part a lubricating oil wherein a pressure in the sealing container is the same as that in the low pressure chamber and wherein an oil supplying passage is formed in either one of the pair of bearing plates for closing both open ends of the c

Abstract: A lubrication system for a rotary piston internal-combustion engine of the trochoid type, including a roller or needle bearing for the rotor on the eccentric, wherein internal engine oil seals may be eliminated. A narrow annular clearance is provided between the shaft and the pinion of the synchromesh gearing, into which a dosed quantity of fresh oil may be pumped through the adjoining side part. At that side of this annular clearance which opens towards the eccentric, a splash edge is provided which is surrounded by a collector groove arranged at the eccentric. A passage in the eccentric leads from a radially outermost part of the collector groove towards the center of the rotor bearing. The pressurizing oil flowing into the annular clearance forces the oil to leave this space whereupon it is splashed off the splash edge under the action of the centrifugal force of the rotating shaft, and transferred into the collector groove from where it is passed through the bore in the eccentric into the rotor bearing.

Abstract: The motion of the orbiting scroll is used to cause pumping of oil in a hermetic horizontal scroll compressor.

Abstract: A lubricating system for a rotary internal combustion engine includes an oil supply chamber at one end of the rotorshaft to which lubricating oil is supplied by an engine driven oil pump. The oil is caused to flow from the chamber along the rotorshaft and into the interfaces between the various rotating engine components attached to the rotorshaft. In the preferred orientation of the engine with the rotorshaft vertically disposed, oil flow is primarily under the influence of gravity. Oil accumulating in a sump at the lower end of the rotorshaft is circulated to the combustion region of the rotor chamber, utilizing the inherent pressure differential therebetween, where it provides further engine lubrication and is eventually burned. Lubricating oil may also be picked up and circulated from the main supply dispersed along the rotorshaft by the circulating supply of cooling air through the engine, whereby it is transferred in the combustion air supplied to the carburetor.

Abstract: An improved cooling system for a rotary engine rotor, having coolant channels provided between the rotor body and the rotor bearing race. The coolant channels interconnect coolant passages provided at each of the triangularly-shaped rotor's apices. Provided in each of the coolant passages are coolant ribs which not only facilitate heat transfer between the coolant and the rotor, but, by preferential positioning, further aid in directing the coolant into and out of the coolant channels.

Abstract: A lubrication system for a rotary-piston internal combustion engine of the trochoid type with roller or needle bearings between the eccentric and the rotor. Lubricating oil in a dosed quantity is passed through a bore in the side part adjacent the gearing between the shaft and the pinion of the gear, from where it is supplied to the connection of the eccentric where, due to the centrifugal force, it is sprayed or splashed into a collector plate at the eccentric wall at the side of the gear. A bore leads from this collector plate to the eccentric bearing and passes the oil into the bearing under the influence of the centrifugal force. Excess oil serves to lubricate the gear and the gas seal elements.

Abstract: A scroll fluid machine comprising a pair of fixed and orbiting scrolls having their respective wraps in mesh with each other. A drive shaft engaging the orbiting scroll is connected to an electric motor and is supported by a frame. An end plate of the oribiting scroll is slidably held between the frame and an end plate of the fixed scroll. A first feed oil passage is formed in at least one of the end plate of the fixed scroll and the frame. The first passage has one end communicates with an oil reservoir defined at a bottom of the housing and the other end opening on a sliding surface contacting with the orbiting scroll. A second feed oil passage formed in the end plate of the orbiting scroll has one end always communicating with the other end of the first passage. The other end of the second passage is located in the vicinity of the axis of the orbiting scroll. A third feed oil passage formed in the drive shaft has one end communicating with the other end of the second passage.

Abstract: An outer envelope trochoidal device is provided. The device includes a rotor shaft and rotor assembly, the rotor assembly having a peripheral surface that defines a trochoidal curve and includes a first and a second rotor half. Each rotor half has a trochoidal profile surface and an inner circular surface. The rotor shaft includes secured thereto a cylindrical sleeve that includes a radial flange to which at least one of the rotor halves is secured. The rotor halves are secured to each other by counterbolt means extending laterally through the rotor halves. One rotor half can include a tapped hole in the outer peripheral surface of the rotor and a channel extending from the end of the tapped hole to the sleeve on the rotor shaft. A chamber is defined by a portion of the sleeve and a portion of the rotor half pinned to the sleeve, the chamber being in fluid communication with the channel.

Abstract: An air cooled rotor for a rotary internal combustion engine, such as a Wankel type engine, in which the housing has a two-lobed epitrochoidal bore which forms the cavity, the rotor having an outer profile of generally equilateral triangular shape with outwardly curved sides, such as convexly curved sides, and the rotor being mounted on an eccentric journal of a main shaft and being geared to rotate in a planetary manner within the cavity at one third of the speed of rotation of the main shaft, the rotor comprising a body and an insert secured together by one or more rigid fasteners which extend into a passage part of the insert from a passage part of the body which opens to the outer profile of the rotor, the or each fastener extending transverse to the axis of rotation of the rotor, at an angle of between 70.degree. and 90.degree. to the axis.

Abstract: The engagement parts of the external rotor of a single rotation are provided with at least one cooling air duct. The inflow takes place by an inflow duct provided in the casing side plate and which is surrounded by the antifriction bearing mounting the external rotor, while the outflow takes place radially through openings provided in the circumferential wall of the casing.

Abstract: An oil hole is formed in a thrust-bearing surface in the eccentric part of a rotary shaft so that a given amount of lubricating oil is always maintained in the oil hole, whereby shortage of oil does not occur at the time of restarting of the rotary compressor after a long term pause of the operation.

Abstract: The lubricating oil pool 11 in the bottom of the shell 1 of a rolling piston refrigerant gas compressor is communicated directly with the space 16 inside the cylindrical piston 4 via a supply passage 10c in a side plate 10. Sufficient clearance is provided between the ends of the piston and the compressor side plates 9, 10 to enable limited communication between the space 16 and the compression and suction chambers 6, 18. The compressor discharge is supplied to the space 7 within the shell, and the resultant differential pressure applied to opposite ends of the supply passage causes a steady flow of oil into the piston interior to properly lubricate the moving parts of the compressor.

Abstract: A lubricating mechanism for a scroll-type fluid displacement apparatus is disclosed. A driving mechanism for an orbiting scroll comprises a drive shaft and a drive pin projecting at an eccentric location from an inner end surface of the drive shaft. An annular boss projecting from a circular end plate of the orbiting scroll receives the drive pin. Therefore, the orbiting scroll is rotatably supported on the drive pin. The lubricating mechanism includes an oil passageway formed in the circular end plate of the orbiting scroll to communicate between the interior of the boss and one of the fluid packets located at the outer peripheral portion of the spiral elements. Lubricating oil thus flows into the interior of the boss and lubricates the bearing and other contact surface disposed in the center portion of the apparatus.

Abstract: A rotary shaft for compressor includes a cylindrical shaft body and a cylindrical eccentric member. The shaft body is rotatably arranged in an outer box of the compressor and is connected to an electric motor at one end portion thereof. The eccentric member has a through hole extending along the axis thereof and formed eccentric thereto, and also has a groove extending from the upper end face to the lower end face thereof to form a passage for lubrication oil. The groove is provided with a bottom face adjacent to the shaft body. The shaft body is inserted into the through hole. The eccentric member is secured to the other end portion of the shaft body by laser-welding the bottom of the groove to the shaft body. An annular eccentric roller is rotatably fitted onto the eccentric member.

Abstract: A rotor for a rotary engine of the kind comprising a rotor which rotates in a cavity to form working chambers within the cavity which vary in volume as the rotor rotates, the rotor comprising a body having, in a plane transverse to the axis of rotation of the rotor, an outer profile of generally equilateral triangular shape with outwardly curved sides and an inner profile providing part peripheral location formations in regions of the mid-points of the rotor sides in engagement with an insert, the insert providing a bearing part and an indexing gear of the rotor, the inner profile of the body adjacent each apex of the rotor being radially outwards of the inserts of the entire axial length of the rotor thereby providing a gap between the location portions so that axial cooling passages are formed bounded by the rotor body and the insert.

Abstract: The invention relates to a motor-driven vane pump, and in particular to vane pumps for generating a vacuum used to operate a secondary unit of an automobile. The vane pump comprises a cast approximately bell-shaped pump housing in which a rotor is eccentrically supported. The rotor is rigidly connected with and driven by a rotor shaft, and carries a plurality of sealing vanes slidably mounted in guide slots provided along its periphery. A rotationally symmetrical driving bell surrounds the pump housing with play, and is rigidly connected with the rotor shaft, which sealingly passes through the bottom of the pump housing. The rotor shaft is thus supported on only one side in the housing cover which closes off the end of the pump housing opposite the chamber bottom.

Abstract: A fluid pump for pumping a fluid from an input conduit to an output conduit comprising a housing having a cup-shaped rotor assembly rotatably disposed within the housing. A vane ring assembly is slidably disposed within the rotor assembly. A protuberance on the vane ring engages a corresponding indentation disposed on an inner and outer cup to prevent the vane ring assembly from rotating within the rotor assembly. A hub assembly is disposed within the vane ring assembly such that the axis of the hub assembly is parallel and eccentric to the axis of rotation of the vane ring assembly. A wear plate is in juxtaposition with the open end of the rotor assembly and a plurality of band-shaped vanes interconnect the vane ring assembly and the hub assembly. The vanes are disposed in a spaced-apart relationship parallel to the axis of rotation of the vane ring assembly to form a plurality of pump chambers.

Abstract: An internal combustion power plant system provides a rotary engine and a rotary fuel/air mixture compressor for the rotary engine on a common driveshaft, coaxially mounting each end and supported between them by a gearbox which synchronizes operation of various ignition and valve and abutment components of the system; compressed fuel/air mixture is supplied to and ignited in a valve-isolated manifold chamber in the rotary engine in successive charges following which each ignited charge is valved radially into one of plural expanding chambers defined by the rotary engine rotor and abutment mechanism, where it urges rotation of the rotor and then exhausts radially; in preferred embodiment the exhaust actuates a parallel fuel-feed which booster pumps fuel/air mixture into the manifold chamber; detail improvements disclosed include designs of runners, abutments, valving and rotary compressor mechanism.

Abstract: A dynamic cooler apparatus is provided for dynamically cooling molten plastic extrudate while pumping metered amounts of that extrudate to an extrusion die or the like. The dynamic cooler apparatus utilizes bi-helical gears in a gear pump configuration in a housing in which a heat exchange medium is circulated. The heat exchange medium is also circulated internally of the gears so that the gear teeth and the housing act to cool discrete volumes of extrudate from four sides defined by the gear teeth and the internal surface of the housing. The bi-helical gears are driven to minimize loading between the teeth thereof and to permit the teeth to be as small as practical to present more cooling surface for a given cross-section of extrudate and optimize the heat transfer capability of the dynamic cooler apparatus. Provision is also made to use the molten extrudate as a lubricant for the shafts and bearings of the bi-helical gears.

Abstract: A device for lubricating a rotary piston air pump driven by an engine penetrated by lubricating oil return conduits. The device includes a rotary housing including a casing and two side walls and rotatably mounted on a stationary axle having an eccentric thereon. The axle penetrates the housing perpendicular with respect to the side walls and receives on its eccentric a rotating piston, which is in camming engagement with the casing and limits volume changing operating chambers. The surface of the eccentric on which the piston is mounted is provided with a recess in communication with a suction conduit and a recess in communication with a discharge conduit. The piston has control openings for successively communicating the recesses with the operating chambers during rotary movement of the piston.

Abstract: A lubrication system for the rotor bearing in a rotary-trochoidal engine including an oil passage extending through the housing of the engine and another oil passage extending through the eccentric to communicate with the eccentric surface carrying the rotor bearing, wherein oil is collected from one oil passage and transferred into the other for lubrication of the rotor bearing.

Abstract: A rotary combustion engine of trochoid design. The engine includes a housing composed of a jacket having a multicurved inner jacket face and two parallel side walls and a substantially horizontally disposed eccentric shaft which extends through circular apertures in the side walls. A liquid cooled piston is rotatably mounted on the eccentric. Oil control rings are mounted on the piston end walls which coact with the side faces of the side wall. A disk is provided in at least one piston end wall with a hub which rotates with the eccentric shaft concentrically with respect to the rotational axis of the piston and extends into the aperture of the side wall. The disk and the hub are provided with sealing rings in tight sealing engagement with the piston end wall and the wall of the aperture, respectively. The sealing rings encompass an annular chamber which is limited radially outwardly by the oil control ring. A groove is provided in the lower range of the wall of the aperture which receives the hub of the disk.